Gree FGR20Pd/DNa-X - Page 59

GREE Duct type split Air conditioner Inverter Series
57
2.4 Communication cable and control cable
Note: For air conditioning units installed in places with strong electromagnetic interference, shielded wire
must be used as the communication cables of the IDU and wired controller, and shielded twisted pairs
must be used as the communication cables between IDUs and between the IDU and ODU.
Communication cable selection for ODU and IDUs:
Material Type
Total Length L
(m/feet) of
Communication
Cable between
Indoor Unit and
Indoor (Outdoor)
Unit
Wire size
(mm
2
/AWG)
Material
Standard
Remarks
Light/Ordinary
polyvinyl
chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤1000m
(L≤3280-5/6feet)
≥2×0.75
(≥2×AWG18)
IEC
60227-5:2007
1.If the wire diameter is enlarged to 2×1
mm² (2×AWG16), the total
communication line length can reach
1500 m (4921-1/4feet).
2. The cord shall be Circular cord (the
cores shall be twisted together).
3. If unit is installed in places with intense
magnetic field or strong interference, it is
necessary to use shielded wire.
Communication cable selection for IDU and wired controller:
Material type
Total length of
communication
line between
indoor unit and
wired controller L
(m/feet)
Wire size
(mm
2
/AWG)
Material
Standard
Remarks
Light/Ordinar
y polyvinyl
chloride
sheathed
cord. (60227
IEC 52
/60227 IEC
53)
L≤250m
(L≤820-1/5feet)
2×0.75~2×1.25
(2×AWG18~2×A
WG16)
IEC 60227-5:2007
1.Total length of communication line can't
exceed 250m (820-1/5feet).
2.The cord shall be Circular cord (the
cores shall be twisted together).
3.If unit is installed in places with intense
magnetic field or strong interference, it is
necessary to use shielded wire.
2.5 Power cable
Only copper conductors can be used as power cables. The copper conductors must meet relevant
national standard and satisfy the carrying capacity of unit.
2.6 Hanger rod and support
(1) Hanger rod: M8 or M10.
(2) U-steel: 14# or above.
(3) Angle steel: 30mm×30mm×3mm or above.
(4) Round steel: Φ10mm or above.